The Coller 4.5mm is the most widely applied product in the SH50 SCOOPY 1995 (S) NETHERLANDS KPH WINKER ( eight times ).
The lowest price component in this Winker parts-list fiche is the Screw Tapping 4.2.
The Winker assembly is constructed from several parts from which the Winker Assy R. Rr. is the most expensive.